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Finding the Fourth Proportional to 214,366.40, 321,452.40 and 81,202.40

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Solution

The fourth proportional to 214,366.40, 321,452.40 and 81,202.40 is: 121,766.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,366.40 : 321,452.40 = 81,202.40 : x
  2. Step 2: Convert to fraction form
    214,366.40/321,452.40 = 81,202.40/x
  3. Step 3: Cross multiply
    214,366.40x = 321,452.40 × 81,202.40
  4. Step 4: Simplify right side
    214,366.40x = 26,102,706,365.76
  5. Step 5: Solve for x
    x = 26,102,706,365.76/214,366.40
  6. Step 6: Final answer
    x = 121,766.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.